Harness frame for looms



Oct. 4, 1949. R. G. TURNER HARNESS FRAME FOR LOOMS Original Filed March1, 1946 HE. E

FIlifi 31 IO 32 VII/011110114:

INVENTOR mar/4R0 6. TURNER l8 I a I I 3 39 ATTORNEY Patented Oct. 4,1949 UNITED STATES PATENT .OFFI-CE. t 2,483,857 V HARNESS FRAME FORLooMs 7 Richard G. Turner, Wrcestcr; Mass.,lassignor to 3 Crompton -&Knowles Loom Works; Worcester, Mass.,. a corporation of MassachusettsOriginal application March 1,1946QSerial No; 651,073. Divided and thisapplication February 25,1947. Serial No. 730,787 a 3 Claims. (oi.139. 92

This; is. a division of my=copending application Serial No. 651,073,filed March 1, 1946, now abandoned. I

This invention relates-to. improvements in harnessframes for looms anditis the general object ofthe invention to provide a-strong lightweightharness frame of simple. construction.

Loom harness. frames. customarily employ top and bottom heddle barswhichare connected to both sidebars of the harness.- frames. Because of thisconstruction it is-necessary to disconnect atleast one side. of theheddlebars to fit them with thewarpheddles. It is. an important objectof my present. inventionto. provide a harness frame with.resilient,heddlebarswhich are free at one end so-thattheymay besprungslightly When heddles are beingfitted totor strung along them I Itis another. object .of my present invention to provide a harnessframemade with continuous side-,top. and bottom elements and having the.bottom element. welded. or soldered tov a. bearing by which the. harnessframe can be reoiprocated;

A'furtherobject-of the invention is to provide an improved detachableconnection between the aforesaid bearing and adriving link.

With these and other objects in view which will appear as thedescription proceeds, my invention resides in the combination andarrangement of parts hereinafter described-and set. forth.

In the accompanying drawings, wherein a convenient embodiment of myinvention is set forth,

Fig. 1 is a front elevation of a harness frame made according to mypresent invention,

Fig. 2 is a vertical section" on line 2-2 of .1. r

Fig. 3 is an enlarged front elevation of the upper left-handpart-of-Fig. 1,

Fig. 4 is a horizontal section on line 44 of Fig. 3,

Fig. 5 is a horizontal section on line 5-5 of Fig. 1, V

Fig. 6 is an enlarged horizontal section on line 6-6 of Fig. 1,

Fig. 7 is an enlarged vertical section on line 1-1, Fig. 2, the linkbeing omitted, and

Fig. 8 is a vertical section on line 88, Fig. '7.

The harness frame forming the subject matter.

of my present invention is intended for use more particularly on narrowunit type looms which weave a, single tape or the like. Such looms havenarrow warps and ordinarily run at high speeds. The harness frames areonly a few inches wide and generally move vertically in guides not shownfixed to some part of the loom, and power is ap- 2 pliedeither to thetop or the bottom of the frames to cause. Vertical reciprocation thereofin, the shedforming operations. of the loom.

Referringmore particularly to Figs. 1 and 2, the harness frameformingthe subject matter of this invention may include acontinuousouter frame-or member ldhavingright and left side bars .orelements- II and l2. which are integral with top. and bottom crossbars-or. elements I3 I and M, respectively. Thefram H]v is preferablymadeof a-length. of. tubular. metal theends of which are indicated-. at.I5..and. I6. A. bearing l1, see Figs. '7 and 8, hasa concave groove. i8into which the endsv l5...and. l6-fit andthelatter. are secured, as.by..si1ver-solder, ,orotherwise, to the bearing- The latterthereforealignsthe: ends I 5 and l Bandunitesthem to form the bottom.bar

Y element l4.

The harness frame is provided witha. plurality of heddles 20.having warpeyes 21 andhavingupper and lower heddIeLbarsIQts 22.. and2.3,.r,espectively. The sides of the tops1ots-22may be .bent in oppositedirections as indicated at .25 in Fig. 3,

' and the sides of the bottom slots 231may also be bent as indicated .at2,6. These bends at the ends of the heddlesare of the customary form.and are for the purpose of preventing, the heddle eyes from gettingtooclose to each other for proper relationship between the fhfiddles andwarp threads, one. of which is indicated at W in Fig. 2.

The. heddles are mounted on top andbottom parallel heddle bars Y30 and3!. which extend respectively through the slots. 22 and 23 and betweenside bars II and I2. These heddle barsas shown in Fig., l have theirright ends 32 rigidly connected to the right sidebar element. II', buttheir left ends 33 are free and terminate close to the left sidebarelement l2. The heddlebarsare without taking a permanent set, and derivetheir entire support from side element l l.

During manufacture of the harness frame the right ends of the heddlebars 30 and 3| are held firmly against the bar I l and attached to thelatter as by silver solder. I do not wish to be limited to thisparticular method of attaching the heddle bars to the side element IIbut have found in practice that it is quite satisfactory. After theheddle bars have been attached as described they lie preferably withinthe outline of the closed hollow harness frame. The free or left ends 33 of the heddle bars can then be sprung or deflected from the full lineto the dotted line position as indicated in Fig. 5 for fitting of therequired number of heddles 20. Because of its resilience each heddle barsprings back to its normal position when released after stringing of theheddles. The heddle bars are of suflicient width so that they have asubstantial amount of attachment to the side bar or element II and canwithstand the tension of the warp threads when the harness frame movesto form top or bottom sheds in the loom.

As shown in Figs. 1, 2 and 8 the bearing I] is connected to a linkhaving a relatively thick side sheet metal member '36 to whichis weldeda stud 3'! fitting into a hole 38 in bearing IT. The other side of link35 is made with a thin retaining sheet metal spring member 39 extendingalong the bearing IT and acting to hold stud 3'! in I a hole 38. Themembers 36 and 39 are riveted together as at 40. By springing member 39away from hearing I! the stud can be removed if desired.

From the foregoing it will be seen that I have provided a simple form ofharness frame in which the heddle bars are securely attached to one ofthe side elements of the harness frame member ID but are free at theiropposite ends to be sprung slightly for the stringing thereon ofheddles. It will also be noted with respect to Fig. 3 that the bends atthe opposite sides of the slot 22 prevent entry of the upper part of theheddle into the narrow space between the left side bar I2 and theadjacent free end 33 of the heddle bar 30. It will be understood thatsimilar conditions exist with respect to the lower heddle bar 3| andthose parts of the heddle at opposite sides of slot 23. Also, thebearing I! aligns the end parts 15 and I6 and forms them into the bottombar or element l4. Furthermore, the spring member 39 permits readyfitting of stud 31 into the hole 38 and removal therefrom. The harnessframe proper, comprising the side and top and bottom member and bearingis not claimed herein but is claimed in the parent application of whichthis is a division.

Having thus described my invention it will be seen that changes andmodifications may be made therein by thoseskilled in the art withoutdeparting from the spirit and scope of the invention and I do not wishto be limited to the details herein disclosed, but what I claim is:

1. In a loom harness, a closed hollow metallic frame having spacedvertical side elements. and a resilient metallic heddle bar permanentlyand rigidly connected at one end thereof to one of said elements on apart thereof facing the other side element and extending toward a partof the other side element facing said one element and having a free endadjacent to said other element, said heddle bar being located entirelywithin the 4 hollow metallic frame and supported entirely from said oneside element, said free end being normally positioned to prevent thestringing of heddles on the heddle bar, and said free end due to theresilience of the heddle bar being deflectable froma normal positionthereof to permit the stringingof heddles thereon.

a 2. In a loom harness, a flat metallic frame hav- AI ing spaced sideelements, a resilient metallic heddle bar having one end thereofpermanently connected to one of said elements and having the other endthereof terminating at a point adjacent to theother' element anddefining a narrow space between said other element and the other end ofsaid heddle bar, and a heddle on said heddle bar adjacent to said otherelement and having a part thereof bent laterally for engagement withsaid other element for the purpose of spacing the heddle from saidnarrow space, said heddle bar normally lying in the-plane of the frame,and saidother end of the heddle bar being deflectable out of the planeof the frame to permit the stringing of heddles on said heddle bar. v 1

3. In a loom harness a frame made of metallic tubing circular intransverse section and having spaced side elements a metallic resilientheddle bar one end of which is securely fastened to one of said elementsand the other end of which is free and extends toward but terminatesadjacent to the other element, and a heddle on said heddle bar adjacentto said other side element having parts thereof bent laterally to engagesaid other side element to space the heddle therefrom, said other end ofthe heddle bar being normally positioned to prevent application of ahedd1e to the heddle bar or removal of a heddle from the heddle bar, andsaid other end due to the resilience of the heddle bar being deflectablefrom the normal position thereof to permit the stringing of a heddle onsaid heddlebar and removal of a heddle from said heddle bar by movementof part of. the heddle between the rounded part of saidother element andsaid other end of theheddle bar.

RICHARD G. TURNER.

REFERENCES CITED 'The following references are of record in the file ofthis patent:

UNITED STATES PATENTS I Date

